Chapter 2

Chapter 3

Chapter 4

Floor(s)

Behavior

The Grub act extremely similar to Larry Jr. and can rapidly charge towards Isaac, similar to the Charger or Chub. When defeated, it will spawn all type of maggot monsters, including Maggots, Chargers, and Spitties.

Notes

Sometimes, they can replace the other Larry Jr. and The Hollow during the boss battle.